KR100497924B1 - Closed type rotary compressor - Google Patents

Abstract

In a hermetic rotary compressor, cost reduction and reliability improvement are achieved while ensuring compressor performance.

The thickness of the partition plate 10 is made thicker than the thickness of the cylinders 8 and 8A constituting the compression element, so that one suction passage 12 extending from the side opening to the center is formed in the partition plate 10, A communication hole 13 is formed which branches from the suction passage 12 to both sides and reaches the suction chamber of each compression element, and connects one suction pipe passage through the sealed container 1 to the suction passage 12.

Description

Hermetic rotary compressors {CLOSED TYPE ROTARY COMPRESSOR}

The present invention relates to a hermetic rotary compressor, and is particularly preferred for hermetic rotary compressors used in refrigerators such as air conditioners and cold air applications.

As a conventional hermetic rotary compressor, as disclosed in Japanese Utility Model Laid-Open No. 63-134188 (Prior Art 1), a motor unit and a compression mechanism unit connected via a crankshaft are accommodated in a hermetic container, and a partition plate is interposed therebetween. In a hermetic rotary compressor in which a compression mechanism is formed by one or two compression elements, the refrigerant gas is sucked into the compression element through a suction pipe, and compressed and discharged into a space in the sealed container. Some suction passages are formed, and two suction passages are connected to independent suction lines.

As a conventional hermetic rotary compressor, as disclosed in Japanese Patent Application Laid-Open No. 63-162991 (Prior Art 2), the electric motor part and the compression mechanism part connected via the crankshaft are accommodated in the hermetic container, and the partition plate is stored. In a hermetic rotary compressor in which a compression mechanism portion is formed by two intervening compression elements, the refrigerant gas is sucked into the compression element through a suction pipe, compressed, and discharged into a space in the sealed container, wherein the suction pipe path is directly connected to the compression element. It may be connected to the suction chamber.

In the hermetic rotary compressor of the prior art 1, since two suction cylinders are formed and two independent suction pipes are connected to each of the suction paths, two suction pipe paths are required, resulting in a significant cost increase. There was a problem.

In addition, in the prior art 1, since two suction pipe paths are provided side by side in the axial direction, there is a problem that a concentrated stress of the internal pressure is applied to a line connecting the two suction pipe paths, and the sealed container is easily damaged. . In particular, when HFC410A refrigerant is used instead of HCHC22 refrigerant, the compressor operating pressure is about 1.5 times, and the pressure in the sealed container is 1.5 times. For this reason, in the prior art 1, it is necessary to increase the pressure resistance strength of the airtight container, and a problem arises that it requires a special correspondence such as an increase in plate thickness or a shape with increased rigidity.

Furthermore, in the related art 1, when the suction pipe is connected to the suction passage of the cylinder, a relatively sliding force is applied between the bearing and the cylinder fixed to the sealed container, so that no variation occurs between them. There was a problem that it was necessary.

On the other hand, in the hermetic rotary compressor of the prior art 2, since the thickness of the cylinder constituting the compression element is extremely thin, not more than half the thickness of the partition plate, when the suction passage is formed in the partition plate, the flow passage cross-sectional area of the suction passage becomes small. This increases the suction resistance of the refrigerant gas, thereby reducing the compression performance.

Moreover, in the prior art 2, the structure of the specific suction path for improving the performance is not disclosed.

It is a first object of the present invention to provide a hermetic rotary compressor capable of reducing cost and improving reliability while securing compressor performance.

A second object of the present invention is to provide a sealed rotary compressor capable of improving compressor performance while improving reliability.

It is a third object of the present invention to provide a hermetic rotary compressor capable of improving productivity while securing compressor performance.

In addition, this invention is not limited to this objective, The objective and advantage of that excepting the above are clear by the following description.

In the sealed rotary compressor of the present invention for achieving the first object, the electric motor part and the compression mechanism part connected through the crankshaft are accommodated in the sealed container, and the compression mechanism part is formed by two compression elements via a partition plate. The refrigerant gas is sucked into each of the compression elements through a suction pipe, compressed, and discharged into a space in the sealed container, wherein the thickness of the partition plate is made thicker than the thickness of the cylinder constituting the compression element. And a suction passage extending from the side opening to the center in the partition plate, branching from the suction passage to both sides to form a communication hole leading to the suction chamber of each compression element, and penetrating the sealed container. The suction pipe passage is connected to the suction passage.

In the hermetic rotary compressor of the present invention for achieving the second object, the electric motor part and the compression mechanism part connected through the crankshaft are accommodated in the hermetic container, and the compression mechanism part is formed by two compression elements through a partition plate. And suctioning the refrigerant gas into each of the compression elements through a suction pipe, compressing the refrigerant gas, and discharging the refrigerant gas into a space in the sealed container. The suction plate extends from the two openings in the lateral circumferential direction to the partition plate. And a communication hole which is connected to each suction passage while branching to both sides to communicate with the suction chamber of each of the compression elements, and connects the suction pipe passages penetrating the sealed container to the suction passages, respectively. It is in one.

In the sealed rotary compressor of the present invention for achieving the third object, the electric motor part and the compression mechanism part connected through the crankshaft are accommodated in the sealed container, and the compression mechanism part is formed by two compression elements through a partition plate. The refrigerant plate is sucked into each of the compression elements through a suction pipe, compressed, and discharged into the space in the sealed container, wherein the partition plate is fixed to the sealed container by welding or the like and extended from the side opening to the center. One suction passage is formed in the partition plate, and one suction pipe passage is connected to the suction passage.

EMBODIMENT OF THE INVENTION Hereinafter, the several Example of the hermetic rotary compressor of this invention is demonstrated using drawing. In addition, the same code | symbol in the figure of each Example shows the same or equivalent.

First, the sealed rotary compressor of the first embodiment of the present invention will be described with reference to Figs. 1 is a longitudinal sectional view showing the hermetic rotary compressor of the first embodiment of the present invention, FIG. 2 is a side view of FIG. 1, FIG. 3 is an AA sectional view of FIG. 1, and FIG. 4 is a partition plate used for the hermetic rotary compressor of FIG. 5 is a cross-sectional view taken along line BB of FIG. 4, and FIG. 6 is a characteristic diagram showing the volumetric efficiency of the hermetic rotary compressor of FIG.

The hermetic rotary compressor 20 is provided with the compressor main body 30 and the gas-liquid separator 2, and is comprised. This hermetic rotary compressor 20 constitutes part of a refrigeration cycle of a refrigerator such as an air conditioner and a cold air application. As the refrigerant, an HFC refrigerant (e.g., an HFC410A refrigerant) that is more familiar to the global environment than the HCHC refrigerant is used.

The compressor main body 30 is comprised by accommodating the electric motor part 21 and the compression mechanism part 22 in the airtight container 1. The electric motor unit 21 is provided with the stator 3 and the rotor 4. The stator 3 is fixed to the container cylinder member 1b by heat fitting, etc., and the rotor 4 is fixed to the crankshaft 5 by press fitting or the like. The balance weight 27 is attached to the upper and lower ends of the rotor 4.

The airtight container 1 is comprised from the container lower member 1a, the container cylinder member 1b, and the container upper material 1c. The container upper member 1c and the container lower member 1a are fitted to the container cylinder member 1b, and the fitting portion is welded to seal the inside thereof. The container cylinder member 1b is formed in the cylindrical shape which opened up and down with the iron plate.

The compression mechanism 22 includes a main bearing 7, a crankshaft 5, a sub bearing 11, two cylinders 8 and 8A, two rollers 9 and 9a and two bens 17. ) And one partition plate 10 as main components. As for the compression mechanism part 22, the cylinders 8 and 8A, the rollers 9 and 9a, and the ben 17 are arrange | positioned at the both sides of the partition plate 10, The main bearing 7 and the sub bearing (outside these) 11) has two compression elements constructed by placement. Thus, the partition plate 10 is shared while being fitted to two compression elements.

The compression chamber of one compression element is constituted by a partition plate 10, a cylinder 8, a main bearing 7, and a roller 9, and the compression chamber of the other compression element is a partition plate 10 and a cylinder 8A. And the secondary bearing 11 and the roller 9A.

And the main bearing 7 is fixed to the container cylinder member 1b by welding etc., and the crankshaft 5 is inserted in this main bearing 7 so that rotation is possible. The crankshaft 5 is provided with two eccentric parts eccentrically 180 degrees apart, and the rollers 9 and 9a are fitted to the two eccentric parts so as to be rotatable. The cylinder 8 and the partition plate 10 are fixed by the bolt 6 with respect to the main bearing 7, and the cylinder 8A and the partition plate 10 with the bolt 6A with respect to the secondary bearing 11. It is fixed by. Thus, the two compression elements are fixed to the hermetic container 1 by the main bearing 7.

The base 17 of the cylinders 8 and 8A is fitted so that the ben 17 can slide and move (refer FIG. 3). The ben 17 is pressed by the spring 18 and divides each compression chamber into the low pressure chamber 25 and the high pressure chamber 26. The pressing force of the spring 18 is set to a force that is balanced with the inertial force by reciprocating the rollers 9 and 9a. And each low pressure chamber 25 is provided with the cylinder inlet 14.

The partition plate 10 is formed with one suction passage 12 extending from the side opening to the center. In addition, the partition plate 10 is provided with a communication hole 13 which branches from the suction passage 12 to both sides and reaches the cylinder suction port 14 of the suction chamber 25 of each compression element. Since the communication hole 13 is formed perpendicular to the partition plate 10, the formation can be performed very easily. The suction passage 12 and the communication hole 13 constitute a flow path of the refrigerant in the partition plate 10, and the flow path is symmetrical up and down.

In order to enlarge the flow path cross-sectional area of the suction passage 12, the thickness of the partition plate 10 is formed thicker than the thickness of the cylinders 8 and 8A.

In particular, the thickness of the partition plate 10 is 1.25 of the thickness of the cylinders 8 and 8A in this embodiment in order to make the flow passage cross-sectional area of the suction passage larger than those in which the suction passages are respectively provided in two cylinders as in the prior art 1. It is formed more than twice.

That is, the thickness of the cylinder of the prior art 1 is t, the minimum dimension from the outer circumference of the suction pipe line to the outer surface of the cylinder is t ₁ , the thickness of the suction pipe is t ₂ , and the thickness of the partition plate 10 of the present embodiment is T, When the minimum dimension from the outer circumference of the suction pipe to the outer surface of the cylinder is t ₁ and the thickness of the suction pipe is t ₂ , in order to make the flow path cross-sectional area of the suction passage 12 larger than that of the prior art 1, the following equation (1) You need to be satisfied. Here, t ₁ and t ₂ are set to almost 0.1t.

Summarizing this equation (1), it becomes 1.25t <T. In this embodiment, 1.275t = T is set.

As described above, when the thickness of the partition plate 10 is increased, the swing in the compression mechanism 22 increases, so that a balance weight 27 of a size corresponding to this is attached to the upper and lower ends of the rotor 4. It is.

The gas-liquid separator 2 is fixed to the side surface of the sealed container 1 by a band or the like. The gas-liquid separator 2 has a gas-liquid separator suction port 15 on the upper side. The refrigerant pipe 2a extending below the gas-liquid separator 4 is connected to the suction passage 12 of the partition plate 10 via the joint pipe 23 and the seal member 24. The joint pipe 23 is constructed by hermetically welding an outer joint pipe and an inner joint pipe. The outer joint pipe is hermetically welded to the hermetic container 1, and the inner joint pipe is welded to the refrigerant pipe 2a. In addition, the seal member 24 is fitted into the suction passage 12 of the partition plate 10. 1, the portion of the refrigerant pipe 2a press-fitted into the seal member 24 is omitted.

Thus, the suction pipe which penetrates the airtight container 1 is comprised from the refrigerant pipe 2a, the joint pipe 23, the seal member 24, etc. As shown in FIG. The specific formation method of this suction line is demonstrated. The joint pipe 23 is formed by copper brazing the inner joint pipe and the outer joint pipe. Then, the joint pipe 23 is fitted with the refrigerant pipe 2a, and the copper solder is conducted between the inner joint pipe and the refrigerant pipe 2a. On the other hand, the seal member 24 is fitted into the suction passage 12 with the partition plate 10 in a single state. In addition, although this seal member 24 is not shown in figure, the inlet side is expanded and the refrigerant pipe 2a is easy to be inserted. While the partition plate 10 is provided in the sealed container 1, the refrigerant pipe 2a is press-fitted into the seal member 24 and the outer joint pipe is inserted into a hole (not shown) of the sealed container 1. Insert and contact. The outer joint pipe and the sealed container 1 are hermetically fixed by applying an electrode to the outer joint pipe brought into contact with the outer joint pipe and the sealed container 1 by electric welding. This finally completes the formation of the suction pipe.

The operation of the hermetic compressor 20 described above will be described.

When the electric motor 21 is energized, the rotor 4 is rotated by the rotational force from the stator 3, and the crank shaft 5 fixed to the rotor 4 is rotated. By the rotation of the two eccentric portions of the crankshaft 5, the two rollers 9, 9A are eccentrically rotated in the compression chamber and the ben 17 is reciprocated in the ben groove. As a result, the refrigerant gas separated by gas-liquid separation from the gas-liquid separator 2 is sucked into each of the low pressure chambers 25 of the two compression elements, and moves to the high-pressure chamber 26, whereby the high-pressure refrigerant gas is discharged into the sealed container ( 1) It is discharged in.

The suction flow of this refrigerant gas will be described in detail. The refrigerant gas sucked into the suction pipe is branched from the communication hole 13 to both sides as indicated by the arrow 19 in the suction passage 12 and sucked into the low pressure chamber 25 through the cylinder suction ports 14 and 14A. .

In this compression operation, since the HFC refrigerant is used as the refrigerant, the discharge pressure is generally 1.5 times higher than that of the HCFC refrigerant, so that the space in the sealed container 1 is 1.5 times the pressure. It will be filled with gas. The high pressure refrigerant gas in the sealed container 1 is discharged to the external high pressure pipe through the discharge pipe 16 attached to the container upper material 1c by welding or the like.

The result of comparing the volumetric efficiency when one suction line of the present embodiment is connected to the partition plate 10 and the volumetric efficiency of the same case as in the prior art 1 in which two suction lines are independently connected to two cylinders is shown. 6 is shown. As apparent from Fig. 6, it was confirmed that the volumetric efficiency of the former shown in Fig. 6A can be obtained at approximately the same level as that of the latter shown in Fig. 6B.

In this embodiment described above, since the suction passage 12 is formed by making the thickness of the partition plate 10 thicker than the thickness of the cylinder 8 constituting the compression element, even if one suction passage 12 The flow passage cross-sectional area can be secured largely, and the compressor resistance can be improved by reducing the suction resistance of the refrigerant gas. In addition, since the suction pipe passage penetrating the airtight container 1 is formed in one, the suction pipe path can be reduced by half compared with the prior art 1, and the simple structure can reduce the cost due to material cost, assembly processing cost and the like. The stress concentration between the two suction pipe passages in the sealed container 1 can be eliminated, so that the pressure resistance can be improved and the reliability can be improved. In addition, reliability can be sufficiently secured even if HFC-based refrigerants which are environmentally friendly are used.

Next, a first modification of the partition plate 10 of the present embodiment will be described with reference to FIGS. 7 and 8.

In this first modification, the flow path of the partition plate 10 formed by the suction passage 12 and the communication hole 13 is substantially Y-shaped, and is formed symmetrically on both sides. As a result, when the refrigerant branches from the suction passage 12 to the communication hole 13, the refrigerant branches gently in both directions in the suction flow direction, thereby reducing the flow resistance than the above-described embodiment. Therefore, suction pressure loss can be reduced and compressor performance can be improved. And since this flow path is symmetrical on both sides, it can be exhibited evenly without impairing the performance of two compression elements. In addition, since the communication hole 13 is inclined only with respect to the suction passage 12, it can be formed comparatively easily.

Next, a second modification of the partition plate 10 of the present embodiment will be described with reference to FIGS. 9 and 10.

In this second modification, the branched portion of the substantially Y-shaped flow path of the first modification is formed to be inclined in the rotational direction of the crankshaft 5 (direction of rotational movement of the roller 9). As a result, when branched from the suction passage 12 to the communication hole 13, the refrigerant branches in the direction in which the refrigerant is sequentially sucked into the low pressure chamber 25 and is smoothly sucked into the low pressure chamber. Therefore, the suction pressure loss can be further reduced than in the first modification, and the compressor performance can be further improved.

Next, a second embodiment of the hermetic rotary compressor of the present invention will be described with reference to Figs. This second embodiment is different from the first embodiment as described below, and the rest of the embodiment is basically the same as the first embodiment.

In this second embodiment, the partition plate 10 is formed with a suction passage 12 extending from the two openings in the side circumferential direction to the center. These two suction passages 12 are formed radially, and the central portion side of these two suction passages 12 is connected to the common communication hole 13 in series. The suction pipe path including the refrigerant pipe 2a penetrates the sealed container 1 and is independently connected to each suction passage 12.

According to this second embodiment, since it has two suction passages 12, the passage cross-sectional area of one suction passage 12 can be made smaller than in the first embodiment. Thereby, the thickness of the partition plate 10 can be made thin. Since the suction passage 12 extends radially, the distance between the openings of the suction passage 12 can be increased, and the concentrated stress between two independent suction pipe passages in the sealed container 1 can be reduced. have. Thereby, reliability can be improved. In addition, if the flow passage cross section of one suction passage 12 is the same as in the first embodiment, the total flow passage cross section of the two suction passages 12 can be increased, and the compressor performance can be improved.

In addition, since the central portions of the two radially formed suction passages 12 communicate with the common communication hole 13, the structure can be made simple and inexpensive. The passage cross-sectional area of the communication hole 13 is set to be larger than the sum of the passage cross-sectional areas of the two suction passages 12, so that the suction resistance can be made low.

Next, a third embodiment of the hermetic rotary compressor of the present invention will be described with reference to Figs. The second embodiment is different from the first embodiment in the following description, and is otherwise basically the same as the first embodiment.

In this third embodiment, the partition plate 10 is fixed to the sealed container 1. As a result, when the suction pipe passage is connected to the suction passage 12, even if the connection load to the suction pipe is applied to the partition plate 10, the load can be received from the sealed container 1, so that the partition plate 10 and Relative sliding forces do not act between the cylinders 8, 8A and the bearings 7, 11, so that no displacement occurs between them. Therefore, it is possible to maintain the dimensional accuracy therebetween without requiring a special process for assembling these. In addition, the cylinders 8 and 8A and the bearings 7 and 11 are fixed to the partition plate 10 by bolts 6 and 6A and are supported.

In addition, one suction passage 12 extending from the side opening to the center is formed in the partition plate 10, and one suction pipe passage is connected to the suction passage 12. Based on this, the same effects as in the first embodiment can be obtained. In addition, although the thickness of the partition plate 10 is thinner than the cylinder 8, 8A in the example of illustration, if the thickness similar to 1st Example is employ | adopted, the same effect can be exhibited in that point.

The partition plate 10 has a portion having the same outer diameter as the inner diameter of the sealed container 1 (in the example of illustration, the entire outer circumference of the partition plate 10 coincides with the entire inner circumference of the sealed container 1). Some of the parts are welded to the sealed container. In the partition plate 10, several holes 10a for lubricating oil are formed. The lubricating oil is stored above and below the partition plate 10 by the lubricating oil hole 10a, and the lubricating oil is easily supplied to the entire compression mechanism part 22.

In addition, as a modification of the third embodiment, although not shown, the partition plate is fixed to the sealed container by welding or the like, and a suction passage extending from the two openings in the lateral circumferential direction to the center is formed in the partition plate and sealed. The suction pipe passage passing through the container may be independently connected to each suction passage. By doing so, the function of the second embodiment can be combined with the third embodiment.

As is clear from the above description, according to the present invention, it is possible to obtain a hermetic rotary compressor capable of reducing cost and improving reliability while securing compressor performance.

Moreover, according to this invention, the sealed rotary compressor which can aim at the improvement of a compressor performance, aiming at the reliability improvement can be obtained.

In addition, according to the present invention, it is possible to obtain a hermetic rotary compressor capable of improving productivity while securing compressor performance.

1 is a longitudinal sectional view showing the hermetic rotary compressor of the first embodiment of the present invention;

Figure 2 is a side view of Figure 1;

3 is a cross-sectional view taken along line A-A of FIG.

4 is a plan view of a partition plate used in the hermetic rotary compressor of FIG.

5 is a cross-sectional view taken along line B-B in FIG.

Fig. 6 is a characteristic diagram showing the volumetric efficiency of the hermetic rotary compressor of Fig. 1 in comparison with the comparative example.

FIG. 7 is a plan view showing a first modification of the partition plate of FIG. 4; FIG.

8 is a cross-sectional view taken along line C-C in FIG.

Fig. 9 is a plan view showing a second modification of the partition plate of Fig. 4.

10 is a sectional view taken along the line D-D in FIG.

Fig. 11 is a side view showing the hermetic rotary compressor of the second embodiment of the present invention.

Fig. 12 shows a partition plate in section E-E in Fig. 11;

Fig. 13 is a sectional view taken along the line F-F in Fig. 12;

Fig. 14 is a sectional view showing the hermetic rotary compressor of the third embodiment of the present invention.

FIG. 15 is a sectional view taken along line G-G in FIG. 14; FIG.

16 is a cross-sectional view taken along line H-H in FIG.

<Explanation of symbols for the main parts of the drawings>

1: airtight container

2: gas-liquid separator

2a: refrigerant piping

3: stator

4: rotor

5: crankshaft

6, 6A: Bolt

7: main bearing

8, 8A: cylinder

9, 9A: Roller

10: partition plate

11: negative bearing

12: suction passage

13: communication hole

14: cylinder inlet

15: gas-liquid separator inlet

16: discharge pipe

17: Ben

18: spring

19: refrigerant flow direction

20: hermetic rotary compressor

21: electric motor part

22: compressor mechanism

23: joint pipe

24: seal member

25: low pressure chamber

26: high pressure chamber

27: balance weight

30: compressor body.

Claims (10)

The electric motor part and the compression mechanism part connected through the crankshaft are housed in a sealed container, and the compression mechanism part is formed by two compression elements via a partition plate, and the refrigerant gas is sucked into each of the compression elements through a suction pipe, and compressed In the sealed rotary compressor to discharge to the space in the sealed container, The thickness of the partition plate is made thicker than the thickness of the cylinder constituting the compression element, so that one suction passage extending from the side opening to the center is formed in the partition plate, and branched from both suction passages to both sides to form the suction plate. A communication hole leading to the suction chamber of the compression element, the branched portion of the communication hole being inclined in the rotational direction of the crank shaft so as to communicate with the low pressure chambers of the respective compression elements, and the one through the sealed container. A sealed rotary compressor, wherein a suction pipe passage is connected to the suction passage. The hermetic rotary compressor according to claim 1, wherein the partition plate has a thickness of at least 1.25 times the thickness of the cylinder. The hermetic rotary compressor according to claim 1, wherein an HFC refrigerant is used as the refrigerant for compression. The hermetic rotary compressor according to claim 1, wherein a flow path formed by the suction passage and the communication hole has a substantially Y shape and is formed symmetrically on both sides. The electric motor part and the compression mechanism part connected through the crankshaft are housed in a sealed container, the compression mechanism part is formed by two compression elements via a partition plate, and the refrigerant gas is sucked into each of the compression elements through a suction pipe, and the compression is performed. In the sealed rotary compressor to discharge to the space in the sealed container, A suction passage is formed in the partition plate extending from the two openings in the lateral circumferential direction to the partition plate, and a communication hole is connected to the suction chamber of each of the compression elements by branching to both sides while being connected to each of the suction passages. And two suction pipe paths passing through the sealed container independently of the respective suction paths. 6. The hermetic rotary compressor according to claim 5, wherein the two suction passages are formed radially, and the central portion side of the suction passages is connected to the common communication hole. The electric motor part and the compression mechanism part connected through the crankshaft are accommodated in a sealed container, the compression mechanism part is formed by two compression elements via a partition plate, and the refrigerant gas is sucked into each of the compression elements through a suction pipe, and the compression is performed. In the sealed rotary compressor to discharge to the space in the sealed container, The partition plate is fixed to the sealed container by welding or the like, and a suction path extending from the side opening to the center is formed in the partition plate, and a suction pipe line is connected to the suction path. Rotary compressor. The electric motor part and the compression mechanism part connected through the crankshaft are accommodated in a sealed container, the compression mechanism part is formed by two compression elements via a partition plate, and the refrigerant gas is sucked into each of the compression elements through a suction pipe, and the compression is performed. In the sealed rotary compressor to discharge to the space in the sealed container, The partition plate is fixed to the sealed container by welding or the like, and a suction passage extending from the two openings in the side circumferential direction to the center is formed in the partition plate, and the two suction pipe passages penetrating the sealed container are used. An enclosed rotary compressor, which is connected to each suction passage independently. The hermetic rotary compressor according to claim 7 or 8, wherein the cylinder and the bearing constituting the compression element are fixed to the partition plate by bolts or the like. delete